![]() ![]() Modules respect the following naming conventions:ĭ.rast: display raster map, d.vect: display vector map ![]() It is possible to analize raster, raster 3D, imagery and vector maps along with their alphanumerical attributes. GRASS GIS is composed of more than 500 modules to perform any kind of GIS analysis. GRASS functionality is available through modules (aka tools or functions). Space-time datasets: collections of raster ( STRDS), raster 3D ( STR3DS) or vector ( STVDS) maps.Vector: point, line, boundary, area, face. #Starting grass gis how toFollow the links for more detailed descriptions of these data types, how they are implemented in GRASS GIS, and how to work with them. GRASS GIS can handle the data types listed below. Moreover, it enables certain analyses that can not be conducted with non-topological or spaghetti data. The topological representation of vector data helps to produce and maintain vector maps with clean geometry. In a topological GIS such as GRASS GIS, this border exists only once and it is shared between these two areas. For example, in a non-topological GIS if two areas share a common border that border would be digitized twice and also stored in a duplicate manner. Unlike other GIS, GRASS GIS native vector format is topological, this means that adjacent geographic components in a single vector map are related to each other. As mentioned above, GRASS GIS has its own internal formats to manage raster and vector data, therefore your data have to be imported or linked into a GRASS LOCATION/MAPSET for further processing and analysis. GRASS GIS is able to read most raster and vector data formats directly (mainly done through the GDAL/OGR library). #Starting grass gis manual
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